<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        h1{
            text-align: center;
            color: blue;
        }
    </style>
</head>
<body>
    <div id="content">
        <h1>404资源不存在</h1>
    </div>
</body>
</html>